/**
 * Copyright (c) 2015-2022, Michael Yang 杨福海 (fuhai999@gmail.com).
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.jboot.db.datasource;

import com.jfinal.aop.Interceptor;
import com.jfinal.aop.Invocation;
import io.jboot.aop.InterceptorBuilder;
import io.jboot.aop.Interceptors;
import io.jboot.aop.annotation.AutoLoad;
import io.jboot.db.JbootDb;
import io.jboot.db.annotation.PriorDatasource;
import io.jboot.utils.AnnotationUtil;
import io.jboot.utils.StrUtil;

import java.lang.reflect.Method;

/**
 * @author Michael Yang 杨福海 （fuhai999@gmail.com）
 */
@AutoLoad
public class PriorDatasourceInterceptor implements Interceptor, InterceptorBuilder {


    @Override
    public void intercept(Invocation inv) {
        PriorDatasource datasource = getAnnotation(inv);
        if (datasource != null) {
            String configName = AnnotationUtil.get(datasource.value());
            if (StrUtil.isNotBlank(configName)) {
                JbootDb.setCurrentConfigName(configName);
            }
        }

        inv.invoke();
    }



    private PriorDatasource getAnnotation(Invocation inv) {
        PriorDatasource annotation = inv.getController().getClass().getAnnotation(PriorDatasource.class);
        return annotation != null ? annotation : inv.getMethod().getAnnotation(PriorDatasource.class);
    }



    @Override
    public void build(Class<?> targetClass, Method method, Interceptors interceptors) {
        if (Util.hasAnnotation(targetClass, PriorDatasource.class) || Util.hasAnnotation(method, PriorDatasource.class)) {
            interceptors.add(this);
        }
    }
}
